12302103221 has 4 divisors (see below), whose sum is σ = 12302354700. Its totient is φ = 12301851744.

The previous prime is 12302103197. The next prime is 12302103239. The reversal of 12302103221 is 12230120321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12230120321 = 617 ⋅19821913.

It can be written as a sum of positive squares in 2 ways, for example, as 9700083121 + 2602020100 = 98489^2 + 51010^2 .

It is a cyclic number.

It is not a de Polignac number, because 12302103221 - 2²⁶ = 12234994357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12302103221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302103421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25976 + ... + 158993.

It is an arithmetic number, because the mean of its divisors is an integer number (3075588675).

Almost surely, 2^12302103221 is an apocalyptic number.

It is an amenable number.

12302103221 is a deficient number, since it is larger than the sum of its proper divisors (251479).

12302103221 is an equidigital number, since it uses as much as digits as its factorization.

12302103221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251478.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12302103221 its reverse (12230120321), we get a palindrome (24532223542).

The spelling of 12302103221 in words is "twelve billion, three hundred two million, one hundred three thousand, two hundred twenty-one".